Leak at AFPR

[smallv6]

I have a brand new Kenne Bell AFPR with 2 brand new "O" Rings (one for the fpr and one for the fuel return line)
The darn thing wont seal!!
I used vasoline on the o-ring going into the rail and it popped in real smooth. It is nice and square to the fuel rail. Prior to that I threaded by hand the fuel line into the bottom of the FPR.
Everything lines up good. I then snugged up the two 10mm bolts
then the fuel return line. I cannot get this thing to stop leaking!!
I have gone through 4 "O" rings at the fuel line because I kept trying to tighten it to seal the leak, and it just crushes the ring.
The o-ring going into the rail is fine, but it wont seal as well, it is pouring gas out of it. Is there any better way to get this stupid design to seal before I just torch this car and push it off a cliff!!!
-Thank you-

 

[salvageV6]

Is the plastic spacer from the stocker needed anymore these days?

Maybe you got an old one that requires that plastic spacer to seal properly.

I do know you can strip the threads in the bottom of one easy enough.

 

[smallv6]

Funny you should mention the spacer. It is still needed with this regulator and I was using it but i noticed it fit kind of loose.
I checked the outside diameter of a 237 regulator where the spacer slips onto and it measured .295 of an inch.
I then measured the same dia. On the Kenne bell unit and it is .285 It is .010 too small for the spacer.
I have a 237 that I can use for now and I guess I will try to make a new fitting for the kenne bell.
At least I know why it wont seal now.

 

[salvageV6]

The trick I use with the flares with O rings in them is to insert the pipe as far up and contact the flange first.

Then thread the nut on BY HAND until it makes contact with the flared pipe.

Finish tightening with a wrench.

Nut only serves to hold the flange and O ring snug for sealing, it's not like pipe threads where they need a lot of torque and the threads do the sealing work.

I'd pull it apart and see what's up with the threads and O rings and all.